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When you install your well, drainfield, and/or septic tank, you must observe minimum isolation distances as indicated in this table. In some cases, isolation distances must be increased.
Note: If your property is hilly, the well should be located up hill from the drainfield or upstream from your drainfield site.
* Isolation distances will be increased for wells serving other than individual dwellings, and may be increased if wells are drawing water from an unprotected aquifer.
** A well cannot be located in an area subject to flooding.